多相的

Variable speed system of cycloconverter-fed multiphase synchronous motor is a major area in the development of high-power AC drive system because of its small dimension, large capacity, high torque, high-rate power, wide-range variable speed, low harmonic pollution, and reliable safety. In the low-speed and large-capacity industrial drives, such as rolling mills, winding motors, marine propeller, cement mixer, etc. it will find a wide application in the future.

采用多相同步电动机的交交变频调速系统，具有体积小、容量大、高转矩、高功率比、宽平滑调速区、谐波污染小、安全可靠的特点，是大功率交流调速领域的主要发展方向之一，在轧机，矿山卷扬，船舶推进，水泥球磨机等低速大容量的场合有着广泛的应用前景。

This paper is focused on the preparation, characterization of metal clusters and theircatalytic performance in the enantioselective as well as stereoselective hydrogenations. It iscomposed of the five parts as follows: Chapter 1 A review was given on the two most studied enantioselective systems—Ni/TA and Pt/cinchona system, including some recent progress.

本论文研究了铂、铱纳米金属簇在α-酮酯、α-二酮不对称氢化中的催化性能及金属离子在α-二酮立体选择性氢化中的修饰作用，主要分为以下几部分：第一章对多相不对称催化体系一Ni／TA和Pt／cinchona及其一些最新进展作了较系统的评述；同时简要介绍了纳米金属簇的特性及其在催化中的一些应用。

The influence of the ore fineness and the reductant content on the deoxidization process was studied.

摘 要：以生物制剂KZSH01作为还原剂与铁锰多金属矿发生氧化还原反应，研究了铁锰矿的细度和还原剂的含量对还原效果的影响，考察了还原过程中温度和物相的变化，探讨了H2SO4用量对Mn和Zn浸出效果的影响。

In spite of the granular nature, soil has traditionally been modeled as a continuum. This continuum mechanics cannot get the precise solution while soil\'s nonlinear, discontinuous, large deformation, and strain localization behavior are considered. The discrete element method is based on discontinuum theory, and is pioneered by Cundall.

土是由多相介质组成的离散颗粒集合体，尽管研究者早已在土的散粒状属性上达成共识，但关于土体力学性质的研究还经常沿用连续介质力学方法，这种基于连续体小变形假设的方法在求解实际土体非线性、非连续、大变形、应变局部化问题时往往无法得到精确解答。

CBD appears to be closely related to another, less rare, sporadic extrapyramidal degeneratie disorder named Progresie Supranuclear Palsy .

CBD的发生是与另一个稍多见的散发的锥体外系变性疾病——进行性核上性麻痹密切相关联的。

Based on the analysis of multiphase flow in vortex field,including the analysis of forces exerted on and the movement of droplets,the mechanism of vortex field coalescence was investigated.

在对旋流场内多相流的分析，包括分散液滴的受力和运动分析的基础上，研究了旋流聚结的机理，并通过试验验证了旋流场内聚结过程的存在，且发现在某一进料流量时聚结效果特别明显，即存在最佳进料流量或入口雷诺数。

He may have been quite right in thinking so, for he was an odd-looking personage, with an ungainly figure and long iron-gray hair that touched his stooping shoulders, and a full, soft brown beard which he had worn ever since he was twenty. In fact, he had looked at twenty very much as he looked at sixty, lacking a little of the grayness.

他这么想并非毫无根据，马修长相古怪，身材粗大，长长的灰色头发垂在佝偻的肩头，而那一大把软软的褐色胡子是他从20岁起就开始留的，实际上，他20岁和60岁的相貌都差不多，只是年轻时没这么多灰白的颜色罢了。

A novel photocatalytic reactor, which can use sun light and graniform photocatalyst, was developed and evaluated. Hydraulics studies show that the actual mean residence time was approximately 1. 5 to 2 times greater than the theoretical mean residence time, which is of great advantage for degrading the pollutants in the reactor, and that the high reaction rate can be obtained by increasing the rotational speed.

设计了一种新型提升式圆盘多相光催化反应器(exalting round-platephotocatalytic reactor，ERPPR)，该反应器的主要特点是能够利用太阳光和粒状催化剂，通过对ERPPR水力学特性的研究发现，该反应器的实际平均水力停留时间约为理论平均停留时间的1.5到2倍，反应器内循环流量与提升桨转速成正比。

An equivalent circuit model of three phase power cables is discussedhere, and it is used to do transient-state analysis of low-resistance groundingsystems, in which the single phase grounding fault occurs.

论文分析了电力电缆的多相链接π型等值电路，构建出三相水平排列的单芯同轴电缆的等效模型，并在进行系统单相接地短路故障的暂态分析中加以应用。

According to conservation of energy,when Joule-Thomson effect on natural gas and friction heat of liquid are considered,a temperature drop formula to calculate multiphase pipeline is deduced.

根据能量守恒原理，既考虑天然气的焦耳—汤姆逊效应，又考虑了液体的摩擦生热，推导出了计算多相管流温降的理论公式。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。